Question Help * A physical therapist wanted to know whether the mean step pulse

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Question Help * A physical therapist wanted to know whether the mean step pulse Two sample T for Men vs Women of men was less than the mean step pulse of women. She randomly selected 53 men and 74 women to participate in the study. Each Men subject was required to step up and down a 6-inch platform. The Women 74 1189 14116 pulse of each subject was then recorded. The following results were 95% Cl for mu Men-mu Women obtained N Mean StDev SE Mean 53 1127 11.4 1.6 (-10.72, 1.68) T-Test mu Mem-mu Women (vss) T=-2.74 P = 00036 DF-123 10 (a) State the null and alternative hypotheses Which of the following is correct? 12 13 14 15 16 17 18 19 20 21 (b) Identify the P-value and state the researchers conclusion if the level of significance was : 0 02 What is the P-value? P-value- State the researcher's conclusion. Which of the following is correct? 0 A. Reject Ho, there is sufficient evidence to conclude that the mean step pulse of men was less than the mean step O B. Falil to reject Ho. there is sufficient evidence to conclude that the mean step pulse of men was less than the mean ° C. Fail to reject Ho there is not sufficient evidence to conclude that the mean step pulse of men was less than the Click to select your answer(s). 23 24 25 pulse of women step pulse of women 27 28 29 30 31

Explanation / Answer

a)

The null and alternative hypothesis is as follows:

H0: mu1=mu2

Vs.

H1: mu1 < mu2

b)

Reject H0, there is sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women.

Because p-value = 0.0036 less than the alpha level = 0.05, reject H0.

c)

The 95% confidence interval for the mean difference in pulse rates of men versus women is

(- 10.72, -1.68)

Conclusion:

We are 95% confident that the mean difference is in the confidence interval.

                               

  

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